Home / 12,589.79-18,889.35-5,194.90

Finding the Fourth Proportional to 12,589.79, 18,889.35 and 5,194.90

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Solution

The fourth proportional to 12,589.79, 18,889.35 and 5,194.90 is: 7,794.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,589.79 : 18,889.35 = 5,194.90 : x
  2. Step 2: Convert to fraction form
    12,589.79/18,889.35 = 5,194.90/x
  3. Step 3: Cross multiply
    12,589.79x = 18,889.35 × 5,194.90
  4. Step 4: Simplify right side
    12,589.79x = 98,128,163.89
  5. Step 5: Solve for x
    x = 98,128,163.89/12,589.79
  6. Step 6: Final answer
    x = 7,794.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.